A high-efficiency milling device for a lens barrel of a vehicle-mounted camera

Abstract

The present application relates to the technical field of milling processing, and particularly relates to a high-efficiency milling device for a vehicle-mounted camera lens barrel, which comprises a machine tool and a milling unit assembled in a machining station of the machine tool, wherein the milling unit is provided with a milling motor and a milling cutter driven by the milling motor, and further comprises: a driving module mounted in the machine tool, and a fixing frame mounted on the driving module; a centering clamping unit arranged on the fixing frame and used for circumferentially centering and clamping a vehicle-mounted camera lens barrel to be machined and adapting to lens barrels of different outer diameter specifications; and a chip collecting unit comprising a protective cylinder fixed on the periphery of the fixing frame, wherein the milling motor drives the fan blades to rotate synchronously, an air flow barrier is formed in the protective cylinder, and the protective cylinder physically blocks to form a double constraint, so that the milling chips are inhibited from escaping outward, the rotating fan blades form a directional air flow circulation, heat in a cutting area is taken away, and heat accumulation of the lens barrel and the milling cutter is reduced.

Description

Technical Field

[0001] This invention relates to the field of milling technology, and in particular to a high-efficiency milling device for vehicle-mounted camera lens barrels. Background Technology

[0002] As a core sensing component of autonomous driving and driving assistance systems, vehicle-mounted cameras are widely installed in various motor vehicles, including passenger cars and commercial vehicles. The lens barrel of a vehicle-mounted camera, as a crucial structural carrier, directly determines the coaxiality of the lens assembly and affects image clarity through its machining precision. Lens barrels are mostly thin-walled metal parts, requiring milling to shape features such as the outer diameter and positioning grooves.

[0003] A search revealed CN114536057B, which discloses a CNC milling machine for machining the barrel of an optical sight. The machine includes a support plate and a slide rail mounted on the upper end of the support plate. A movable seat is movably engaged at the upper end of the slide rail. An adjustment component is mounted on the top of the movable seat, and a clamping component is installed on the top of the adjustment component. A chip collection component is mounted on the upper end of the adjustment component outside the clamping component. A fixed seat is fixedly connected to the upper end of the support plate on one side of the movable seat. A control terminal is mounted on the outer wall of the fixed seat, and a mounting groove is formed on the outer wall of the fixed seat near the movable seat. A movable mounting seat is movably engaged within the mounting groove. A machine head is mounted on the outer wall of the movable mounting seat, and a milling cutter head is connected to the lower end of the bottom shaft of the machine head. The milling cutter head is suspended above the clamping component.

[0004] However, in the above technical solution, a chip collection component is configured to collect and process the processing chips. However, the chip collection component only relies on a simple enclosure to passively collect the chips. During the milling operation, the fine metal chips generated by the high-speed impact are very easy to break through the enclosure and splash outward. The chips will be scattered in the gaps of the machine tool worktable, guide rail and transmission module, requiring frequent machine stops for manual cleaning, interrupting the milling process and reducing the overall processing efficiency.

[0005] In view of this, this paper studies and improves upon existing problems, and provides a high-efficiency milling processing device for vehicle camera lens barrels. The aim of this technology is to solve the problems and improve practical value. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and to propose a high-efficiency milling processing device for vehicle-mounted camera lens barrels.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a high-efficiency milling processing device for vehicle-mounted camera lens barrels, comprising a machine tool and a milling unit assembled at the machine tool processing station, wherein the milling unit is equipped with a milling motor and a milling cutter driven by the milling motor, and further comprising: The drive module is installed inside the machine tool, and a mounting bracket is installed on the drive module; A centering clamping unit is mounted on a fixed frame for circumferentially centering and clamping the lens barrel of an automotive camera; A chip collection unit includes a protective cylinder surrounding a fixed frame. Inside the protective cylinder is a rotary cylinder that can rotate around its own axis after rotating a preset number of times at the output end of a cutting motor. Two sets of metal plates are arranged radially opposite each other on the outer circumference of the rotary cylinder. An adsorption element is fixed in the hollow cavity of the rotary cylinder at the position corresponding to each set of metal plates. The adsorption element has at least two states via a conductive component: Firstly, when the adsorption component is energized during milling, it magnetically attracts the metal chips generated during milling to the surface of the metal plates. Secondly, as the metal plate moves away from the cutting zone, the corresponding adsorption component is de-energized and demagnetized, causing the chips attached to the metal plate to fall off. The protective blocking unit includes fan blades mounted on the output ends of two sets of milling motors, wherein the fan blades have at least the following two working states: Firstly, the fan blades rotate inside the protective cylinder, forming an airflow barrier from the inside out, which, together with the energized metal plate, confines the milling chips that splash from the milling process inside the protective cylinder. Secondly, the airflow generated by the continuous rotation of the fan blades drives the chips from the surface of the unpowered metal plate to fall into the collection unit below.

[0008] Preferably, the milling unit further includes a guide rail, a base, and a cylinder. The guide rail and the base are mounted on the machine tool worktable. The cylinder is hinged between the base and the milling motor. The output end of the cylinder is driven by the milling motor.

[0009] Preferably, the drive module includes a Y-axis drive module and a Z-axis drive module. The Y-axis drive module is fixedly mounted inside the machine tool, the Z-axis drive module is fixedly mounted on the mover end of the Y-axis drive module, and the fixing bracket is fixedly mounted on the mover end of the Z-axis drive module.

[0010] Preferably, the centering clamping unit includes a positioning cylinder fixedly mounted on the bottom of the fixed frame. The outer wall of the positioning cylinder is provided with limiting grooves evenly distributed around the perimeter. A bracket is rotatably mounted inside the limiting grooves. A clamping roller is provided at the end of the bracket. A fixed shaft is fixedly mounted on the side wall of the fixed frame. One end of the bracket is hinged to the fixed shaft.

[0011] Preferably, the outer wall of the positioning cylinder is provided with a toothed groove, the side wall of the fixing frame is fixedly installed with a first drive motor, and the output end of the first drive motor is fixedly installed with a gear, which meshes with the toothed groove.

[0012] Preferably, the conductive component includes a power supply box, a conductive ring, a C-shaped conductive sheet, and a conductive substrate. The conductive ring is disposed on the inner wall of the protective cylinder, the power supply box is installed on the outer wall of the protective cylinder, and the power supply box is electrically connected to the conductive ring. The C-shaped conductive sheet is fixedly disposed at both ends of the rotating cylinder, and the conductive substrate is disposed in the hollow inner cavity of the rotating cylinder. The C-shaped conductive sheet is electrically connected to the conductive substrate and is in contact with the conductive ring. An ear plate is fixedly disposed on the inner wall of the protective cylinder, and the rotating cylinder is rotatably assembled on the ear plate. A second drive motor is fixedly installed on one side of the ear plate, and the output end of the second drive motor is drivenly connected to the rotating cylinder. A waste bin is installed inside the machine tool, and the waste bin is located below the collection shell.

[0013] Preferably, the adsorption element is an electromagnet, and the electromagnet is electrically connected to the conductive substrate through a coil.

[0014] Preferably, the protective cylinder has a feeding groove on its surface, the collecting component is a collecting shell, the collecting shell is fixedly installed on the outer wall of the protective cylinder, the feeding groove is located near the chip release side of the rotating cylinder, and the chips that fall off after the power supply magnet is de-energized fall into the inside of the collecting shell, a baffle is slidably installed at the outlet of the collecting shell, an electric push rod is installed on the outer wall of the collecting shell, the output end of the electric push rod is fixedly connected to one end of the baffle, and a scraper is fixed on the inner wall of the protective cylinder near the feeding groove, the end of the scraper is attached to the outer wall of the rotating cylinder.

[0015] Preferably, a rotary encoder is installed on the outer wall of the output end of the milling motor, the rotary encoder is connected to the control system, and the control system is connected to the second drive motor.

[0016] Preferably, the protective blocking unit further includes a brush bristle component and a protective sleeve. The brush bristle component is disposed on the surface of the fan blade, and the protective sleeve is fixed to the two ends of the protective sleeve. The inner wall of the protective sleeve is provided with a groove. The outer periphery of the fan blade is in intermittent contact with the groove. The outer periphery area of ​​the fan blade is larger than the inner hole area of ​​the protective sleeve. The top of the protective sleeve is integrally formed with a shell, and a filter plate is installed on the surface of the shell.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention utilizes a first drive motor, gears, and positioning cylinder tooth grooves to drive multiple sets of brackets and clamping rollers to swing synchronously, achieving circumferential centering clamping of automotive camera barrels with different outer diameters. No special clamping jaws need to be replaced; the radial clamping force can be precisely controlled simply by rotating the motor. This allows for rapid production changes of multiple barrel specifications. The clamping rollers make contact with the outer wall of the barrel, ensuring clamping rigidity to resist milling cutting forces while preventing deformation of thin-walled barrels due to rigid compression, effectively guaranteeing the coaxiality and roundness accuracy of the processed barrel.

[0018] 2. This invention utilizes a rotating cylinder, electromagnets, and metal plates to form an electromagnetic adsorption and rotating chip collection structure. The metal chips generated during milling are adsorbed onto the surface of the metal plate by the energized electromagnets. The chip accumulation status is determined by the actual workload of the milling motor using a rotary encoder, which drives the rotating cylinder to rotate. This causes the metal plate, which is full of chips, to rotate to the unloading position, where the power is cut off and the magnetization is deactivated. The chips automatically fall off, completing the chip removal process. Simultaneously, another set of clean metal plates is switched to the processing area to continue the adsorption operation. There is no need to stop the machine, disassemble the equipment, or manually clean the chips, ensuring continuous milling and improving production efficiency.

[0019] 3. This invention uses a milling motor to drive the fan blades to rotate synchronously, forming an airflow barrier inside the protective cylinder. Combined with the physical obstruction of the protective cylinder, this double constraint inhibits the outward escape of milling chips. The rotation of the fan blades forms a directional airflow circulation, which carries away the heat in the cutting area, reduces the heat accumulation between the workpiece and the milling tool, reduces the interference of thermal deformation on machining accuracy, and extends the tool life. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the bottom structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the protective cylinder of the present invention; Figure 4 This is a three-dimensional structural diagram of the centering clamping unit of the present invention; Figure 5 This is one of the cross-sectional structural schematic diagrams of the protective cylinder of the present invention; Figure 6 This is a three-dimensional structural diagram of the conductive component of the present invention; Figure 7 This is an exploded structural diagram of the rotating cylinder and metal plate of the present invention; Figure 8 This is a second schematic cross-sectional view of the protective cylinder of the present invention; Figure 9 This is a three-dimensional structural diagram of the protective blocking unit of the present invention; Figure 10 This is a schematic diagram of the three-dimensional structure of the enclosure tube of the present invention; Figure 11 This is a schematic diagram of the three-dimensional structure of the fan blade of the present invention.

[0021] Legend: 1. Machine tools; 2. Milling unit; 21. Guide rail; 22. Base; 23. Cylinder; 24. Milling motor; 25. Milling cutter; 3. Y-axis drive module; 4. Z-axis drive module; 5. Fixture; 6. Centering clamping unit; 61. Positioning cylinder; 611. Limiting groove; 612. Toothed groove; 62. Bracket; 63. Fixed shaft; 64. Clamping roller; 65. First drive motor; 66. Gear; 7. Chip collection unit; 71. Protective cylinder; 72. Ear plate; 73. Rotary cylinder; 74. Metal plate; 75. Electromagnet; 76. Conductive substrate; 77. C-shaped conductive sheet; 78. Conductive ring; 79. Power supply box; 710. Feed chute; 711. Collection shell; 712. Baffle; 713. Electric push rod; 714. Scraper; 715. Second drive motor; 8. Protective barrier unit; 81. Fan blade; 811. Brush bristles; 82. Enclosure; 821. Groove; 83. Housing; 84. Filter plate; 9. Waste bin. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] Example 1:

[0024] See Figures 1 to 4As shown, the present invention provides a high-efficiency milling processing device for vehicle-mounted camera lens barrels, including a machine tool 1 and a milling unit 2 assembled at the processing station of the machine tool 1. The milling unit 2 is provided with a milling motor 24 and a milling cutter 25 driven by the milling motor 24, and further includes: a drive module installed inside the machine tool 1, on which a fixed frame 5 is mounted; a centering clamping unit 6 disposed on the fixed frame 5 for circumferentially centering and clamping the vehicle-mounted camera lens barrel; 2. According to claim 1, the high-efficiency milling processing device for vehicle-mounted camera lens barrels is characterized in that the milling unit 2 further includes a guide rail 21, a base 22 and a cylinder 23, the guide rail 21 and the base 22 are mounted on the worktable of the machine tool 1, the cylinder 23 is hinged between the base 22 and the milling motor 24, and the output end of the cylinder 23 is drivenly connected to the milling motor 24; the drive module includes a Y-axis. The transmission module 3 and the Z-axis transmission module 4 are fixedly assembled inside the machine tool 1. The Z-axis transmission module 4 is fixedly assembled to the moving end of the Y-axis transmission module 3. The fixed frame 5 is fixedly assembled to the moving end of the Z-axis transmission module 4. The centering and clamping unit 6 includes a positioning cylinder 61 fixedly assembled to the bottom of the fixed frame 5. The outer wall of the positioning cylinder 61 is provided with limiting grooves 611 evenly distributed around its perimeter. A bracket 62 is rotatably mounted inside the limiting grooves 611. A clamping roller 64 is provided at the end of the bracket 62. A fixed shaft 63 is fixedly installed on the side wall of the fixed frame 5. One end of the bracket 62 is hinged to the fixed shaft 63. The outer wall of the positioning cylinder 61 is provided with a toothed groove 612. A first drive motor 65 is fixedly installed on the side wall of the fixed frame 5. A gear 66 is fixedly installed at the output end of the first drive motor 65. The gear 66 meshes with the toothed groove 612.

[0025] In this embodiment, the device uses machine tool 1 as the base of the whole machine. The milling unit 2 is installed on the worktable of machine tool 1 via guide rail 21 and base 22. Cylinder 23 is used to drive milling motor 24 together with milling cutter 25 to perform feed or retraction action. Fixing frame 5 is straddling above the processing station to support centering clamping unit 6, chip collection unit 7 and protective blocking unit 8, so that the clamping and positioning of the lens barrel, milling and chip collection are completed in the same station. Before processing begins, the lens barrel of the vehicle camera to be processed is placed axially inside the positioning cylinder 61. The end of the lens barrel extends into the positioning cylinder 61 to achieve initial axial positioning. After the first drive motor 65 starts, it drives the gear 66 to rotate. The gear 66 meshes with the tooth groove 612 on the outer wall of the positioning cylinder 61, thereby driving the positioning cylinder 61 to rotate around its own axis by a certain angle. Under the hinge constraint of the fixed shaft 63, the rotation of the positioning cylinder 61 is converted into the swing of the bracket 62 around the fixed shaft 63, so that the clamping roller 64 at the end of the bracket 62 moves closer to or further away from the center of the positioning cylinder 61. By controlling the rotation angle of the first drive motor 65, the radial clamping force of the clamping roller 64 on the outer wall of the lens barrel can be adjusted, so that the two sets of brackets 62 and clamping rollers 64 distributed on the inner circumference of the positioning cylinder 61 form a centering clamp on the lens barrel from both ends. The above positioning structure can adapt to different outer diameter specifications of the lens barrel. There is no need to change the special fixture during the clamping process. The clamping roller 64 is in line contact with the outer wall of the lens barrel, which not only ensures the clamping rigidity and prevents the lens barrel from moving left and right during the milling process, but also avoids the rigid jaws pressing out clamping marks on the thin wall surface of the lens barrel, thus improving the positioning accuracy and clamping stability at both ends of the lens barrel. It should be noted that, since the rotation angle of the first drive motor 65 corresponds one-to-one with the radial feed of the clamping roller 64, the operator can preset the clamping stroke according to the wall thickness and material properties of the lens barrel, and stably control the radial clamping force within a reasonable range that prevents thin-wall elastic deformation of the lens barrel and is sufficient to resist the milling cutting force. This suppresses the roundness distortion of thin-walled parts caused by excessive clamping force, and ensures that the coaxiality and cylindricity of the inner and outer circles of the lens barrel after processing remain at a high level in mass production. Furthermore, the four sets of brackets 62 symmetrically clamp the lens barrel to form a support structure, which improves the support stiffness near the point of application of the milling cutting force, suppresses the tool vibration and thin-wall chatter when the milling cutter 25 enters and exits, and simultaneously improves the surface waviness and tool mark uniformity of the workpiece. Furthermore, considering the characteristics of frequent small-batch production changes for automotive camera lens barrels, this structure only needs to call the angle parameters corresponding to the first drive motor 65 to complete the replacement of workpieces with different outer diameter specifications, saving the auxiliary time of disassembling and replacing special grippers and resetting tools, thus improving the equipment's adaptability to multi-variety mixed-line processing and production changeover efficiency.

[0026] Example 2:

[0027] See Figures 5 to 8As shown, the chip collection unit 7 includes a protective cylinder 71 surrounding the fixed frame 5. Inside the protective cylinder 71 is a rotary cylinder 73 that can rotate around its own axis after rotating a preset number of times at the output end of the cutting motor 24. Two sets of metal plates 74 are arranged radially opposite each other on the outer periphery of the rotary cylinder 73. An adsorption element is fixed in the hollow cavity of the rotary cylinder 73 corresponding to the position of each set of metal plates 74. The adsorption element has at least two states through a conductive component: first, the adsorption element is energized in the milling process state, and magnetically adsorbs the metal chips generated by milling onto the surface of the set of metal plates 74; second, the metal plates 74 rotate away from the surface of the set of metal plates 74. In the cutting zone, the corresponding adsorption component is de-energized and demagnetized, causing the chips attached to the metal plate 74 to fall off. The conductive assembly includes a power supply box 79, a conductive ring 78, a C-shaped conductive sheet 77, and a conductive substrate 76. The conductive ring 78 is disposed on the inner wall of the protective cylinder 71, and the power supply box 79 is installed on the outer wall of the protective cylinder 71. The power supply box 79 is electrically connected to the conductive ring 78. The C-shaped conductive sheet 77 is fixedly disposed at both ends of the rotating cylinder 73. The conductive substrate 76 is disposed in the hollow inner cavity of the rotating cylinder 73. The C-shaped conductive sheet 77 is electrically connected to the conductive substrate 76, and the C-shaped conductive sheet 77 is in contact with the conductive ring 78. A lug plate 72 is fixedly mounted on the rotating cylinder 73. A second drive motor 715 is fixedly mounted on one side of the lug plate 72, and the output end of the second drive motor 715 is connected to the rotating cylinder 73. A waste bin 9 is installed inside the machine tool 1, and the waste bin 9 is located below the collection shell 711. The adsorption element is an electromagnet 75, which is electrically connected to the conductive substrate 76 through a coil. A feeding groove 710 is opened on the surface of the protective cylinder 71, and the collecting element is a collection shell 711, which is fixedly installed on the outer wall of the protective cylinder 71. The feeding groove 710 is close to the rotating cylinder. The chip release side of the 73 is provided. After the power supply magnet 75 is de-energized, the chips that fall off fall into the collection shell 711. A baffle 712 is slidably installed at the outlet of the collection shell 711. An electric push rod 713 is installed on the outer wall of the collection shell 711. The output end of the electric push rod 713 is fixedly connected to one end of the baffle 712. A scraper 714 is fixed on the inner wall of the protective cylinder 71 near the feed chute 710. The end of the scraper 714 is attached to the outer wall of the rotary cylinder 73. A rotary encoder is installed on the outer wall of the output end of the milling motor 24. The rotary encoder is connected to the control system signal. The control system is connected to the second drive motor 715 signal.

[0028] In this embodiment, a large number of metal chips are generated during the milling operation of the milling cutter 25 on the outer wall of the mirror barrel. When the device is in the initial working state, the C-shaped conductive plate 77 at one end of the rotary cylinder 73 remains in contact with the conductive ring 78 and conducts through it. The current output by the power supply box 79 is transmitted to the conductive substrate 76 through the conductive ring 78 and the C-shaped conductive plate 77 in sequence, which drives the electromagnet 75 located on the inner side wall of the rotary cylinder 73 and close to the processing area to generate magnetic attraction. The metal plate 74 attached to the outside of the electromagnet 75 then acquires magnetism and can adsorb the metal chips that splash into the protective cylinder 71 during the milling operation onto its own surface. The rotary encoder connected to the output shaft of the milling motor 24 will collect the number of rotations of the milling motor 24 in real time. By using the number of rotations, the statistics of the milling feed and the amount of processing work are indirectly completed, so as to determine the working condition of chip adsorption and accumulation. When the rotary encoder detects that the number of rotations of the milling motor 24 has reached the preset threshold inside the system, the control system will automatically control the second drive motor 715 to operate. The second drive motor 715 drives the rotary cylinder 73 to complete a half-turn rotation around its own axis. The metal plate 74 on the side that has been adsorbed with metal chips will rotate together with the rotary cylinder 73 to the position of the slot of the feeding groove 710. The corresponding C-shaped conductive sheet 77 on this side will also simultaneously detach from the contact with the conductive ring 78. The electromagnet 75 at the corresponding position will then be de-energized to achieve demagnetization. The metal chips adsorbed on the surface of the metal plate 74 will no longer be constrained by the magnetic attraction and will slide down the feeding groove 710 under its own gravity and fall into the collection shell 711 arranged below for temporary storage. When all the processing steps of the batch of workpieces are completed, the system controls the electric push rod 713 to drive the baffle 712 to move and open the collection shell 711. The temporarily stored metal chips will fall down into the waste bin 9 to complete the collection of chips. At the same moment that the rotary drum 73 completes half a revolution to switch positions, the metal plate 74 on the other side of the rotary drum 73, which was not involved in the adsorption operation, rotates and switches to the working position on the processing side. During the rotation, the metal plate 74 comes into contact with the scraper 714, which can further scrape off the residual chips on the surface of the metal plate 74. At the same time, the C-shaped conductive sheet 77 on this side re-contacts and conducts electricity with the conductive ring 78, and the electromagnet 75 at the corresponding position is energized again to generate magnetic attraction. The clean metal plate 74 continues to adsorb the newly generated metal chips from milling. Through the above scheme, the rotary drum... The body 73 drives two sets of metal plates 74 to alternately engage in adsorption. The entire milling process does not require stopping the equipment midway or disassembling the device for manual chip cleaning. This not only maintains the continuous operation of milling, avoiding production interruptions and reduced processing efficiency caused by machine stoppage for chip cleaning, but also enables automated collection and recycling of milling metal chips through electromagnetic adsorption, reducing manual intervention and the risk of operators being scratched by contact with metal chips. At the same time, it also maintains a clean working environment inside the protective cylinder 71, reducing chip accumulation and wear and jamming of surrounding parts. Furthermore, because the metal plate 74 is arranged close to the cutting area and the electromagnet 75 is continuously energized, the high-temperature fine chips that have just been cut from between the milling cutter 25 and the lens barrel are magnetically captured during their splashing. Almost no free chips accumulate in the cutting area, the tip of the milling cutter 25 does not form a built-up edge, and the chips are not repeatedly squeezed by the cutting edge and scratched on the machined surface. The tool durability and the first-pass yield of the machined surface of the lens barrel are improved simultaneously. The chip removal timing is not triggered by a fixed duration, but is determined by the actual chip generation amount calculated by the rotary encoder based on the number of rotations of the milling motor 24 in real time. Half-cycle switching is only started when the adsorption amount is close to the effective adsorption capacity of the metal plate 74. This avoids the cycle time waste caused by switching before the adsorption is saturated, and also avoids the chips from escaping and overflowing after the adsorption is saturated.

[0029] Example 3:

[0030] See Figures 9 to 11As shown, the protective blocking unit 8 includes fan blades 81 mounted on the output ends of two sets of milling motors 24. The fan blades 81 have at least two working states: First, the fan blades 81 rotate inside the protective cylinder 71 to form an airflow barrier from the inside out, which, in conjunction with the energized metal plate 74, confines the milling chips splashed from the milling inside the protective cylinder 71; Second, the airflow generated by the continuous rotation of the fan blades 81 drives the chips on the surface of the non-energized metal plate 74 to fall into the collection member below. The protective blocking unit 8 also includes a brush bristle 811 and a protective cylinder 82. The brush bristle 811 is disposed on the surface of the fan blades 81, and the protective cylinder 82 is fixed to the two ends of the protective cylinder 71. The inner wall of the protective cylinder 82 is provided with a groove 821. The outer periphery of the fan blades 81 intermittently contacts and cooperates with the groove 821. The outer periphery area of ​​the fan blades 81 is larger than the inner hole area of ​​the protective cylinder 82. The top of the protective cylinder 71 is integrally formed with a shell 83, and a filter plate 84 is installed on the surface of the shell 83.

[0031] In this embodiment, during the milling process, the protective blocking unit 8 operates synchronously with the feed of the milling cutter 25. The protective sleeve 82 is sleeved on the outside of the milling cutter 25 and moves forward and backward with the sliding seat. Several flexible fan blades 81 are installed on the outer wall of the output end of the milling motor 24. The fan blades 81 are made of rubber material and their area is larger than the inner hole area of ​​the protective sleeve 82. When the milling cutter 25 feeds or retracts, the fan blades 81 bend and deform under the restriction of the edge of the protective sleeve 82, so as to smoothly pass through the protective sleeve 82 and enter and exit the protective sleeve 71. After deformation, they can quickly spring back to their original shape. During the milling process, the fan blades 81 rotate continuously. On the one hand, the rotating fan blades 81 form a barrier inside the protective sleeve 71, preventing the chips generated by the milling cutter 25 from directly cutting the mirror barrel. The airflow splashes outward through the protective cylinder 82; on the other hand, the rotation of the fan blade 81 creates a negative pressure inside the protective cylinder 71, and the external airflow is drawn into the protective cylinder 71 through the filter plate 84 above the housing 83. The fan blade 81 drives the airflow to flow along the protective cylinder 71 towards the protective cylinder 82, promoting the circulation of gas inside and outside the protective cylinder 71, accelerating the heat dissipation of the milling cutter 25 and the cutting area of ​​the lens barrel, reducing the probability of thermal fatigue caused by the accumulation of cutting heat in the lens barrel and the milling cutter 25. At the same time, the airflow flows from top to bottom and from inside to outside along the inside of the protective cylinder 71, suppressing the splashing of chips to the upper part of the protective cylinder 71, reducing the scouring damage of chips to the inner wall of the protective cylinder 71, and allowing the protective cylinder 71 to maintain clear vision for a longer time, making it easier for operators to observe the processing status. Furthermore, the surface of the fan blade 81 is provided with bristle components 811. When the flying chips come into contact with the rotating fan blade 81, they are stuck into the gap formed by the adjacent bristle components 811, preventing secondary chip splashing. During the retraction process, the outer periphery of the fan blade 81 intermittently contacts the groove 821 on the inner wall of the protective cylinder 82, causing the fan blade 81 to generate periodic micro-vibrations, shaking the chips stuck in the bristle components 811 to the bottom of the protective cylinder 71, ensuring that the bristle components 811 continue to maintain their interception capability in subsequent processing.

[0032] Example 4:

[0033] Furthermore, the three embodiments described above can be combined to form a mutually supporting closed loop within the same workstation: The centering clamping unit 6 in Embodiment 1 relies on multiple sets of clamping rollers 64 to achieve circumferential centering of the lens barrel, stably controlling the cutting position and vibration amplitude of the workpiece within a very small range, making the direction and distance of the chip splash generated by milling predictable, and preventing the chips from scattering randomly due to workpiece clamping eccentricity and milling chatter, thereby enabling the metal plate 74 of the chip collection unit 7 in Embodiment 2 to be precisely aligned with the cutting area, and the magnetic attraction of the electromagnet 75 to be concentrated on the main chip splash trajectory, improving the adsorption and capture efficiency of metal chips and reducing the probability of chip escape; Conversely, the chip collection unit 7 in Embodiment 2 can adsorb and remove metal chips generated in the cutting area in real time, so that there are no accumulated chips in the cutting area, the cutting load of the milling cutter 25 is stable, effectively suppressing milling impact vibration, and further consolidating the clamping stability of the centering clamping unit 6. The directional airflow formed by the fan blade 81 in Embodiment 3, on the one hand, blocks the chips, so that the magnetic attraction and airflow guidance work together to further reduce the probability of chip overflow. On the other hand, the cutting heat carried away by the airflow controls the temperature rise of the lens barrel and the milling cutter 25, and the thin wall of the lens barrel does not undergo dimensional distortion due to thermal expansion and contraction. This ensures that the radial clamping force preset by the first drive motor 65 in the centering clamping unit 6 will not drift due to temperature changes. The clamping roller 64 maintains a stable clamping state of the lens barrel throughout the process, ensuring that the centering accuracy established in Embodiment 1 can be maintained continuously during long-term continuous milling. The centering clamping unit 6 suppresses workpiece milling chatter, reduces milling load fluctuation, makes the milling motor 24 speed more stable, the fan blade 81 speed stable, and the airflow barrier formed by the protective blocking unit 8 has uniform flow rate and stable heat dissipation effect. In summary, the centering and clamping unit 6, the chip collection unit 7, and the protective blocking unit 8 mutually constrain and enhance each other, enabling the simultaneous maintenance of the lens barrel's shape and position accuracy, surface quality, and workstation cleanliness during continuous batch processing.

[0034] Working principle: In use, before processing begins, the vehicle camera lens barrel to be processed is axially placed inside the positioning cylinder 61. The end of the lens barrel extends into the positioning cylinder 61 to achieve initial axial positioning. After the first drive motor 65 starts, it drives the gear 66 to rotate. The gear 66 meshes with the tooth groove 612 on the outer wall of the positioning cylinder 61, thereby driving the positioning cylinder 61 to rotate around its own axis by a certain angle. Under the hinge constraint of the fixed shaft 63, the rotation of the positioning cylinder 61 is converted into the swing of the bracket 62 around the fixed shaft 63, so that the clamping roller 64 at the end of the bracket 62 moves closer to or further away from the center of the positioning cylinder 61. By controlling the rotation angle of the first drive motor 65, the radial clamping force of the clamping roller 64 on the outer wall of the lens barrel can be adjusted, so that the two sets of brackets 62 and clamping rollers 64 distributed on the inner circumference of the positioning cylinder 61 form a centering clamp on the lens barrel from both ends. When the device is in its initial working state, the C-shaped conductive sheet 77 at one end of the rotary cylinder 73 remains in contact with the conductive ring 78 and conducts electricity. The current output from the power supply box 79 is transmitted to the conductive substrate 76 through the conductive ring 78 and the C-shaped conductive sheet 77 in sequence. This drives the electromagnet 75, which is located on the inner wall of the rotary cylinder 73 and close to the processing area, to generate magnetic attraction. The metal plate 74, which is attached to the outside of the electromagnet 75, then acquires magnetism and can attract the metal chips that splash into the protective cylinder 71 during the milling operation to its own surface. The rotary encoder connected to the output shaft of the milling motor 24 will collect the number of rotations of the milling motor 24 in real time. By using the number of rotations, the milling feed and processing volume are indirectly statistically analyzed to determine the working condition of chip accumulation. When the rotary encoder detects that the number of rotations of the milling motor 24 has reached the preset threshold inside the system, the control system will automatically control the second drive motor 715 to operate. The second drive motor 715 drives the rotary cylinder 73 to complete a half-turn rotation around its own axis. The metal plate 74 on the side that has been adsorbed with metal chips will rotate together with the rotary cylinder 73 to the position of the slot of the feeding groove 710. The corresponding C-shaped conductive sheet 77 will also simultaneously detach from the contact with the conductive ring 78. The electromagnet 75 at the corresponding position will then be de-energized to achieve demagnetization. The metal chips adsorbed on the surface of the metal plate 74 will no longer be constrained by the magnetic attraction and will slide down the feeding groove 710 under its own gravity and fall into the collection shell 711 arranged below for temporary storage. When all the processing steps of the batch of workpieces are completed, the system controls the electric push rod 713 to drive the baffle 712 to move, open the collection shell 711, and the temporarily stored metal chips will fall down into the waste bin 9. At the same moment that the rotary cylinder 73 completes half a revolution to switch positions, the metal plate 74 on the other side of the rotary cylinder 73 that was not involved in the adsorption operation rotates and switches to the working position on the processing side. During the rotation, the metal plate 74 will come into contact with the scraper 714. The scraper 714 can further scrape off the residual chips on the surface of the metal plate 74. At the same time, the C-shaped conductive sheet 77 configured on this side re-contacts and conducts electricity with the conductive ring 78. The electromagnet 75 at the corresponding position is energized again to generate magnetic attraction. The clean metal plate 74 continues to perform adsorption operation on the newly generated metal chips from milling. During milling, the protective blocking unit 8 moves synchronously with the feed of the milling cutter 25. The protective sleeve 82 is sleeved on the outside of the milling cutter 25 and moves forward and backward with the sliding seat. Several flexible fan blades 81 are installed on the outer wall of the output end of the milling motor 24. The fan blades 81 are made of rubber material and their area is larger than the inner hole area of ​​the protective sleeve 82. When the milling cutter 25 feeds or retracts, the fan blades 81 bend and deform under the restriction of the edge of the protective sleeve 82, so as to smoothly pass through the protective sleeve 82 and enter and exit the protective sleeve 71. After deformation, they can quickly spring back to their original shape. During the milling process, the fan blades 81 rotate continuously. On the one hand, the rotating fan blades 81 are protected by the protective sleeve 71. An internal barrier is formed to prevent chips generated by the milling cutter 25 cutting the lens barrel from directly passing through the protective cylinder 82 and splashing outwards. On the other hand, the rotation of the fan blade 81 creates a negative pressure inside the protective cylinder 71. External airflow is drawn into the protective cylinder 71 through the filter plate 84 above the housing 83. The fan blade 81 drives the airflow to flow along the protective cylinder 71 towards the protective cylinder 82, promoting gas circulation inside and outside the protective cylinder 71 and accelerating heat dissipation of the milling cutter 25 and the cutting area of ​​the lens barrel. At the same time, the airflow along the inside of the protective cylinder 71 from top to bottom and from inside to outside inhibits the splashing of chips to the upper part of the protective cylinder 71, reducing the erosion damage of chips to the inner wall of the protective cylinder 71.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency milling processing device for vehicle-mounted camera lens barrels, comprising a machine tool (1) and a milling unit (2) mounted on the processing station of the machine tool (1), wherein the milling unit (2) is provided with a milling motor (24) and a milling cutter (25) driven by the milling motor (24), characterized in that, Also includes: The drive module is installed inside the machine tool (1), and a mounting bracket (5) is installed on the drive module. A centering clamping unit (6) is mounted on a fixed frame (5) for circumferentially centering and clamping the lens barrel of a vehicle camera; The chip collection unit (7) includes a protective cylinder (71) surrounding the fixed frame (5). Inside the protective cylinder (71) is a rotary cylinder (73) that can rotate around its own axis after rotating a preset number of times at the output end of the cutting motor (24). Two sets of metal plates (74) are arranged radially opposite each other on the outer periphery of the rotary cylinder (73). An adsorption element is fixed in the hollow cavity of the rotary cylinder (73) corresponding to the position of each set of metal plates (74). The adsorption element has at least two states through a conductive component: Firstly, when the adsorption component is energized during milling, it magnetically adsorbs the metal chips generated during milling onto the surface of the metal plate (74). Secondly, when the metal plate (74) moves away from the cutting area, the corresponding adsorption component is de-energized and demagnetized, causing the chips attached to the metal plate (74) to fall off. The protective blocking unit (8) includes fan blades (81) mounted on the output ends of two sets of milling motors (24), wherein the fan blades (81) have at least the following two working states: Firstly, the fan blades (81) rotate inside the protective cylinder (71) to form an airflow barrier from the inside out, which, together with the energized metal plate (74), confines the milling chips that splash from the milling inside the protective cylinder (71). Secondly, the airflow generated by the continuous rotation of the fan blades (81) drives the chips on the surface of the non-electrically powered metal plate (74) to fall into the collection unit below.

2. The high-efficiency milling device for vehicle-mounted camera lens barrels according to claim 1, characterized in that, The milling unit (2) also includes a guide rail (21), a base (22) and a cylinder (23). The guide rail (21) and the base (22) are mounted on the worktable of the machine tool (1). The cylinder (23) is hinged between the base (22) and the milling motor (24). The output end of the cylinder (23) is driven by the milling motor (24).

3. The high-efficiency milling device for vehicle-mounted camera lens barrels according to claim 1, characterized in that, The drive module includes a Y-axis drive module (3) and a Z-axis drive module (4). The Y-axis drive module (3) is fixedly installed inside the machine tool (1). The Z-axis drive module (4) is fixedly installed on the moving end of the Y-axis drive module (3). The fixing frame (5) is fixedly installed on the moving end of the Z-axis drive module (4).

4. The high-efficiency milling device for vehicle-mounted camera lens barrels according to claim 1, characterized in that, The centering clamping unit (6) includes a positioning cylinder (61) fixedly mounted on the bottom of the fixed frame (5). The outer wall of the positioning cylinder (61) is provided with a limiting groove (611) evenly distributed around the perimeter. A bracket (62) is rotatably mounted inside the limiting groove (611). A clamping roller (64) is provided at the end of the bracket (62). A fixed shaft (63) is fixedly mounted on the side wall of the fixed frame (5). One end of the bracket (62) is hinged to the fixed shaft (63).

5. The high-efficiency milling device for vehicle-mounted camera lens barrels according to claim 4, characterized in that, The outer wall of the positioning cylinder (61) is provided with a toothed groove (612), and the side wall of the fixing frame (5) is fixedly installed with a first drive motor (65). The output end of the first drive motor (65) is fixedly installed with a gear (66), and the gear (66) meshes with the toothed groove (612).

6. The high-efficiency milling device for vehicle-mounted camera lens barrels according to claim 1, characterized in that, The conductive assembly includes a power supply box (79), a conductive ring (78), a C-shaped conductive sheet (77), and a conductive substrate (76). The conductive ring (78) is disposed on the inner wall of the protective cylinder (71), and the power supply box (79) is installed on the outer wall of the protective cylinder (71). The power supply box (79) and the conductive ring (78) are electrically connected. The C-shaped conductive sheet (77) is fixedly disposed at both ends of the rotating cylinder (73), and the conductive substrate (76) is disposed in the hollow cavity of the rotating cylinder (73). The C-shaped conductive sheet (77) and the conductive substrate are connected. (76) are electrically connected, and the C-shaped conductive sheet (77) is in contact with the conductive ring (78); the inner wall of the protective cylinder (71) is fixed with an ear plate (72), the rotary cylinder (73) is rotatably assembled on the ear plate (72), a second drive motor (715) is fixedly installed on one side of the ear plate (72), the output end of the second drive motor (715) is drivenly connected to the rotary cylinder (73), and a waste bin (9) is installed inside the machine tool (1), the waste bin (9) is located below the collection shell (711).

7. The high-efficiency milling device for vehicle-mounted camera lens barrels according to claim 6, characterized in that, The adsorption element is configured as an electromagnet (75), which is electrically connected to the conductive substrate (76) via a coil.

8. The high-efficiency milling device for vehicle-mounted camera lens barrels according to claim 7, characterized in that, The protective cylinder (71) has a feeding groove (710) on its surface. The collecting component is a collecting shell (711). The collecting shell (711) is fixedly installed on the outer wall of the protective cylinder (71). The feeding groove (710) is located near the chip release side of the rotary cylinder (73). After the power supply magnet (75) is de-energized, the chips that fall off fall into the collecting shell (711). A baffle (712) is slidably installed at the outlet of the collecting shell (711). An electric push rod (713) is installed on the outer wall of the collecting shell (711). The output end of the electric push rod (713) is fixedly connected to one end of the baffle (712). A scraper (714) is fixed on the inner wall of the protective cylinder (71) near the feeding groove (710). The end of the scraper (714) is attached to the outer wall of the rotary cylinder (73).

9. The high-efficiency milling device for vehicle-mounted camera lens barrels according to claim 6, characterized in that, A rotary encoder is installed on the outer wall of the output end of the milling motor (24). The rotary encoder is connected to the control system, and the control system is connected to the second drive motor (715).

10. The high-efficiency milling device for vehicle-mounted camera lens barrels according to claim 1, characterized in that, The protective blocking unit (8) also includes a brush bristle (811) and a protective tube (82). The brush bristle (811) is disposed on the surface of the fan blade (81). The protective tube (82) is fixed to the two ends of the protective tube (71). The inner wall of the protective tube (82) is provided with a groove (821). The outer periphery of the fan blade (81) is in intermittent contact with the groove (821). The outer periphery area of ​​the fan blade (81) is larger than the inner hole area of ​​the protective tube (82). The top of the protective tube (71) is integrally formed with a shell (83). A filter plate (84) is installed on the surface of the shell (83).

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